No no no!!! You're SO close. And it's not that you're doing anything wrong, it's just subtle tweaks. That's why I suggested reading the stickies. They will teach you how to get your equipment right. Please don't give up!!!
Have you considered a temporary tub setup? Super inexpensive and you will have time to save up for a permanent enclosure once your pet has outgrown the tub.
Also, just a thought: it's a good idea to have some emergency vet money stashed away just in case. Better safe than sorry.
Anyway, we're here to help. Please don't give up and don't be afraid to ask questions. This forum is full of experienced and knowledgeable keepers and breeders who are happy to help you enjoy your pet and share in our passion. Just choose who you take advice from wisely, as the internet is full of contradictory info and anybody can post whatever they want. This forum will probably prove to be your most trusted asset, so please don't be afraid to use it.